diff --git a/examples/bluetooth/a2dp_source/main/main.c b/examples/bluetooth/a2dp_source/main/main.c
index aadfb3c40..10042ca3f 100644
--- a/examples/bluetooth/a2dp_source/main/main.c
+++ b/examples/bluetooth/a2dp_source/main/main.c
@@ -106,6 +106,8 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
+
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
 
     if (esp_bt_controller_init(&bt_cfg) != ESP_OK) {
@@ -113,7 +115,7 @@ void app_main()
         return;
     }
 
-    if (esp_bt_controller_enable(ESP_BT_MODE_BTDM) != ESP_OK) {
+    if (esp_bt_controller_enable(ESP_BT_MODE_CLASSIC_BT) != ESP_OK) {
         ESP_LOGE(BT_AV_TAG, "%s enable controller failed\n", __func__);
         return;
     }
diff --git a/examples/bluetooth/ble_hid_device_demo/main/ble_hidd_demo_main.c b/examples/bluetooth/ble_hid_device_demo/main/ble_hidd_demo_main.c
index 3094f6bc7..2aaa74726 100644
--- a/examples/bluetooth/ble_hid_device_demo/main/ble_hidd_demo_main.c
+++ b/examples/bluetooth/ble_hid_device_demo/main/ble_hidd_demo_main.c
@@ -271,6 +271,8 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT));
+
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
     ret = esp_bt_controller_init(&bt_cfg);
     if (ret) {
@@ -278,7 +280,7 @@ void app_main()
         return;
     }
 
-    ret = esp_bt_controller_enable(ESP_BT_MODE_BTDM);
+    ret = esp_bt_controller_enable(ESP_BT_MODE_BLE);
     if (ret) {
         ESP_LOGE(HID_DEMO_TAG, "%s enable controller failed\n", __func__);
         return;
diff --git a/examples/bluetooth/bt_discovery/main/bt_discovery.c b/examples/bluetooth/bt_discovery/main/bt_discovery.c
index ef2b11ef5..9fa3a7561 100644
--- a/examples/bluetooth/bt_discovery/main/bt_discovery.c
+++ b/examples/bluetooth/bt_discovery/main/bt_discovery.c
@@ -279,13 +279,15 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
+
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
     if ((ret = esp_bt_controller_init(&bt_cfg)) != ESP_OK) {
         ESP_LOGE(GAP_TAG, "%s initialize controller failed: %s\n", __func__, esp_err_to_name(ret));
         return;
     }
 
-    if ((ret = esp_bt_controller_enable(ESP_BT_MODE_BTDM)) != ESP_OK) {
+    if ((ret = esp_bt_controller_enable(ESP_BT_MODE_CLASSIC_BT)) != ESP_OK) {
         ESP_LOGE(GAP_TAG, "%s enable controller failed: %s\n", __func__, esp_err_to_name(ret));
         return;
     }
diff --git a/examples/bluetooth/bt_spp_acceptor/main/example_spp_acceptor_demo.c b/examples/bluetooth/bt_spp_acceptor/main/example_spp_acceptor_demo.c
index a983b7c09..51bdbe07b 100644
--- a/examples/bluetooth/bt_spp_acceptor/main/example_spp_acceptor_demo.c
+++ b/examples/bluetooth/bt_spp_acceptor/main/example_spp_acceptor_demo.c
@@ -150,6 +150,7 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
 
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
     if ((ret = esp_bt_controller_init(&bt_cfg)) != ESP_OK) {
diff --git a/examples/bluetooth/bt_spp_initiator/main/example_spp_initiator_demo.c b/examples/bluetooth/bt_spp_initiator/main/example_spp_initiator_demo.c
index d94c5354c..f25025e02 100644
--- a/examples/bluetooth/bt_spp_initiator/main/example_spp_initiator_demo.c
+++ b/examples/bluetooth/bt_spp_initiator/main/example_spp_initiator_demo.c
@@ -234,6 +234,7 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
 
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
     if ((ret = esp_bt_controller_init(&bt_cfg)) != ESP_OK) {
diff --git a/examples/bluetooth/bt_spp_vfs_acceptor/main/example_spp_vfs_acceptor_demo.c b/examples/bluetooth/bt_spp_vfs_acceptor/main/example_spp_vfs_acceptor_demo.c
index c1c0e4df5..4d338c0fc 100644
--- a/examples/bluetooth/bt_spp_vfs_acceptor/main/example_spp_vfs_acceptor_demo.c
+++ b/examples/bluetooth/bt_spp_vfs_acceptor/main/example_spp_vfs_acceptor_demo.c
@@ -151,6 +151,8 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
+
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
     if (esp_bt_controller_init(&bt_cfg) != ESP_OK) {
         ESP_LOGE(SPP_TAG, "%s initialize controller failed", __func__);
diff --git a/examples/bluetooth/bt_spp_vfs_initiator/main/example_spp_vfs_initiator_demo.c b/examples/bluetooth/bt_spp_vfs_initiator/main/example_spp_vfs_initiator_demo.c
index 3ef9bd27f..55ab67074 100644
--- a/examples/bluetooth/bt_spp_vfs_initiator/main/example_spp_vfs_initiator_demo.c
+++ b/examples/bluetooth/bt_spp_vfs_initiator/main/example_spp_vfs_initiator_demo.c
@@ -219,6 +219,7 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
 
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
     if (esp_bt_controller_init(&bt_cfg) != ESP_OK) {